Smoke from the powersounder could possibly come through the vent near the headlight switch.
Fuse for foglights will also have other things on the circuit,so might not be feasible to pull it.Im sure theres details of fuse circuits somewhere.FAQ possibly ?
Thanks Albs,i don't know what other circuits are on the fog lights fuse.I will try to find out,but maybe its a warning about the power sounder
Moggy 
None, fuse #16 for the fogs only
Hi Rob,thanks for that.BTW,as you are one of the most knowledgeable guys on the forum.Can i ask you a few questions.Firstly is it possible to pull out the switches,on the fog lights main light switch and front fogs switch.To physically see the wires also should i change the alternator,and should i disconnect the power sounder as a matter of cause.Your advice would be most welcome,Regards Dean 
Doubt that very much.
Pics showing switch disassembled below. Doesn`t hurt to disconnect & remove PS as a precaution. Highly unlikely to be alternator, can always check outputs as per guide http://www.omegaowners.com/forum/index.php?topic=90619.0.
Here`s the pics, as you can see fog bank can be removed, no wires as such in switch body, bulb illuminates lower icons through light guides, small LED at top of PCB illuminates the top icons





Thanks for that Rob,i will start by disconnecting the ps is it best to remove it completely.It wont cause the engine management light to come on will it,then check alternator output,and then remove the switches.I assume they just pull out,thanks for your advice mate very much apreciated.Dean
